# SDR MAS2002F00005

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 7, 2002
- Operation: Air carrier
- Aircraft: N77260
- Make and model: Cndair CL6002B19
- Aircraft serial: 7260
- System (JASC): [3200 · Landing Gear System](https://openairdocs.org/jasc/3200)
- Part: Bypass Valve
- Part number: 601R751451
- Condition: Inoperative
- Location: Fwd Nose Comp
- Stage of operation: CL
- Nature of condition: O
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/MAS2002F00005

## Discrepancy

AFTER TAKEOFF, A GEAR DISAGREE WARNING MESSAGE.  CAPT REPORTED A RHYTHMIC THUMPING FROM NOSE AREA.  FLIGHT CREW EXTENDED THE GEAR AND RETRACTED WITH THE SAME RESULTS.  GEAR WAS EXTENDED AND THE AIRCRAFT RETURNED TO FIELD WITHOUT INCIDENT.  FERRIED AIRCRAFT, MECHANIC IS TROUBLESHOOTING.   MECHANIC REMOVED AND REPLACED THE MAIN LANDING GEAR RUNAROUND BYPASS VALVE.  OPS CHECK GOOD.

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